Malicious PDF — malware analysis report

Static analysis result for SHA-256 052a625a89d36f02…

MALICIOUS

PDF

46.0 KB Created: 2020-08-12 16:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36025a2a66ba0a1aae3330f86e3f8f59 SHA-1: 5db5c2be0b45220dd42d9191c6a3598efcbf3a1b SHA-256: 052a625a89d36f026052d015a77390d43bc21bebe2bd5a09eb734d789163e6d0
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to redirectors and SEO farms designed to trick users into downloading malicious content. The primary lure appears to be a fake download for 'Human psychology in telugu pdf download', which redirects to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple PDF link farm heuristics supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=human+psychology+in+telugu+pdf+download In PDF document text
    • http://files.emilywahlgallery.com/uploads/1/3/2/6/132695830/rojukanilumom.pdfIn PDF document text
    • http://files.headofeng.com/uploads/1/3/1/6/131637679/peledowakud_sabepeganegewa.pdfIn PDF document text
    • http://kifuma.eternal-roots.com/uploads/1/3/1/1/131164250/5689bb6d.pdfIn PDF document text
    • http://files.completecirclecounselingcoaching.com/uploads/1/3/1/4/131411199/dedibikakaxox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/zakobifivok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/kebozufifexofikiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9610/files/70638718742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8266/9461/files/magisterio_de_la_iglesia_catolica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/pemumefijobogogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2286/0956/files/60231023974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/gikutaleve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/mivinidapogitolid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/yasin_dan_latin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/10130083588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/morph_mod_for_1._8.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5663 5628 bytes
SHA-256: 9d9daf711ba1358ad9a95a22c02737860ff54cf6e61cfa69e91e10dec06163b5
font_01_sfnt_off00006966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6966 2116 bytes
SHA-256: 8db65adc699bed2ed4e99b174e414cace916d9ae25f4e5597e3d94de4d1667c8
font_02_sfnt_off0000730d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730D 9880 bytes
SHA-256: 40f467fffef7169271ba53556222a11e0926082ab750c3b170fc510812d62eed
font_03_sfnt_off0000951a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x951A 16160 bytes
SHA-256: 9ffc405fbed68b1ed35cf25504b2a045b5802e2074cf99e6920a228075e829fc