Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a436fc8bd312eec…

MALICIOUS

PDF

48.0 KB Created: 2020-08-04 07:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edce36a079fc4fb46229f8924ad7bc71 SHA-1: abd73ae70c1957484665e26a9ce22b8ff0debfdc SHA-256: 1a436fc8bd312eec7ced98f61f8e7058faf0bf2882e714185ecc3e93bda18343
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=calendar+2020+pdf+kalnirnay'. This indicates the document's primary purpose is to lure the user to a malicious site. The PDF also contains a large number of embedded links, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure the malicious destination. No scripts were extracted, but the embedded URLs and the ML classifier strongly suggest a phishing or redirection attack.

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.com/pify?keyword=calendar+2020+pdf+kalnirnay In PDF document text
    • http://files.thorinrealestategroup.com/uploads/1/3/1/6/131607565/25e836af2.pdfIn PDF document text
    • http://files.beyondstrengthmaine.com/uploads/1/3/2/6/132696280/lamutesirabogurofaja.pdfIn PDF document text
    • http://segado.confistreet.com/uploads/1/3/1/3/131384771/ferax.pdfIn PDF document text
    • http://files.meteorcruise.com/uploads/1/3/1/4/131454389/jivapabidevo.pdfIn PDF document text
    • http://files.tmfgala.org/uploads/1/3/0/7/130775232/nulag-mexafofipof-pudanijivumakez.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/1/0429/9938/2170/files/wotopoxavepeduzejigoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/93182058308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5883/7142/files/what_is_a_slug_in_wordpress.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/zakavawudazumox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/10248532555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/45822474652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4717/2768/files/disokogotudesulibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/rimoxupiwuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/17809416500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/34893829595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/weather_underground_iowa_city.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6758 5200 bytes
SHA-256: 2a45288f1ad3c92dca681ea568c6d7b1f53b4dddd6def634870e4972d242bec1
font_01_sfnt_off00007921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7921 10068 bytes
SHA-256: 3f6a6bf18cc7e575d4cb1ae450b5e55065ec7ab2504062d2962036c56f5f2434
font_02_sfnt_off00009bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD8 6668 bytes
SHA-256: f65bd31dfe82ad648fb73c9f110f832639490edb2ebaefd9f07fb7d5a0e17e44