Malicious PDF — malware analysis report

Static analysis result for SHA-256 77588f7db88e5827…

MALICIOUS

PDF

58.2 KB Created: 2020-07-31 04:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26a5a2e8dc55f67fbf0b9214acd707c2 SHA-1: b124f3e9bb0a7fe67a2e00bd577306522af3ccc0 SHA-256: 77588f7db88e5827cd3e5d149b334d1069dd30d3b1fb39994b5e00c41cbc7754
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to farm SEO traffic and redirect users to malicious infrastructure. The primary redirector URL is identified as malicious. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt, likely using a lure related to 'ba 1st year english literature books pdf download'.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=ba+1st+year+english+literature+books+pdf+download In PDF document text
    • http://files.tomboulian.org/uploads/1/3/0/7/130739557/mifodajekagil.pdfIn PDF document text
    • http://files.onewesterra.com/uploads/1/3/0/8/130874180/3352096.pdfIn PDF document text
    • http://files.susannaloewy.org/uploads/1/3/2/6/132680853/jozaw_gijagake_xogos_wosav.pdfIn PDF document text
    • http://files.excelerationstudios.com/uploads/1/3/1/4/131484029/jafipakasopivun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/votuwofebefadopidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/mawiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/lobikamavono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/5016288421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/fizibejomilefebesiveboti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/17226651835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/nudowufafow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2587/4600/files/velovez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/73913393460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/15427634998.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000779e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779E 5684 bytes
SHA-256: f0fedeac0454a4a8800c4377b765641c07a569a760e4f37c35c7780be3c1dbd0
font_01_sfnt_off00008afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFA 2596 bytes
SHA-256: 0356b696b297760848c49c968d58d5f134dcfb69e9a974516ab76476752695d2
font_02_sfnt_off0000967d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967D 2320 bytes
SHA-256: 7bb91423d63eb6bd7c2657278979848d60b7d38679106ec23dbd755ba6ab3d32
font_03_sfnt_off0000a0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0CD 10560 bytes
SHA-256: a47797184c49c9f215c6e900c2156268c46c2db118f3441b69cdfe2f3b8e350d
font_04_sfnt_off0000c485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC485 16224 bytes
SHA-256: 4362e686776cae9b5e877a8e5de4a1ff5ae9966626bcf1046762b8e3a01bbea2