Malicious PDF — malware analysis report

Static analysis result for SHA-256 aadf55badff3db24…

MALICIOUS

PDF

43.3 KB Created: 2020-08-02 04:55:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a44caa092703e89f5be9231f8f52209 SHA-1: 2afcc0e0e75c1346c199578ee16e6fe8d22e3977 SHA-256: aadf55badff3db2476b7ce7ebfe20e30208ba667a29ded384a81c6e18e54f6c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicative of a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=random+company+names, which likely serves to obfuscate the ultimate destination of the attack. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, but the sheer volume of links and the redirector usage strongly suggest a malicious intent, likely for phishing or malware distribution.

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=random+company+names In PDF document text
    • http://files.millermommy.com/uploads/1/3/0/7/130775768/6235654.pdfIn PDF document text
    • http://files.arielmakesmedia.com/uploads/1/3/1/4/131406435/febodujuzupet_diwimex.pdfIn PDF document text
    • http://files.porthcawlmuseum.com/uploads/1/3/0/7/130739719/4416333.pdfIn PDF document text
    • http://files.harborimpactministries.com/uploads/1/3/1/3/131380619/jewopupudusiregokud.pdfIn PDF document text
    • http://files.fit-to-nzeb.com/uploads/1/3/1/4/131437627/zodarozekurako.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/bawupuluparevuteru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7004/3813/files/venijozutupit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/50033931581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fedixudarat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0036/3169/files/nijedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/wawevofomusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/88011253207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5805/files/69615414014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/83917747393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5019/6392/files/zinarawagiwikiduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/xewujavire.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_off00006009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6009 4860 bytes
SHA-256: d1b532e2e4f7f9536333c92175ff0db6b350a4b5213a0256223aa1408cc3ef2d
font_01_sfnt_off00007075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7075 9888 bytes
SHA-256: e24dc95e034e493bd64a9d2a04d135bef6515797733349295538065f6bc8a758
font_02_sfnt_off0000925e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x925E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2