Malicious PDF — malware analysis report

Static analysis result for SHA-256 157b79e49cb38356…

MALICIOUS

PDF

52.0 KB Created: 2020-08-20 14:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3db7e10577c2e5de1580847747a7efb0 SHA-1: 0df805855547ceeea1c1ee916e8f6f0cdb0a4636 SHA-256: 157b79e49cb38356a118d18021e7c16f0a9b41d7ed4ac86e079faf44b2459d6b
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many pointing to Shopify domains, which are likely part of an SEO link farm to obscure the primary malicious redirector. The primary redirector URL, 'https://ttraff.ru/pify?keyword=video+lagu+armand+maulana+sebelah+mata', is flagged as malicious. The document's content, though obfuscated, includes this URL and other PDF links, suggesting a phishing or malware distribution attempt.

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=video+lagu+armand+maulana+sebelah+mata In PDF document text
    • http://files.phantomlightning.com/uploads/1/3/1/4/131408017/469bc2a50.pdfIn PDF document text
    • http://files.ashleymaltzmd.com/uploads/1/3/1/4/131437246/364952.pdfIn PDF document text
    • http://files.naturesowncharcoal.com/uploads/1/3/0/7/130739188/3534145.pdfIn PDF document text
    • http://naxolip.fountainheadmuseum.com/uploads/1/3/1/3/131379830/7368621.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/1/0429/5553/8591/files/77932776470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4940/9950/files/52963968878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/61377888344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9055/9655/files/camille_paglia_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/87765263286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/developmental_psychology_childhood_and_adolescence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/country_code_213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/tejotanoralofum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/36697508346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5988/files/atoms_and_elements_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2130/2946/files/53450202290.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_off000061ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CA 5228 bytes
SHA-256: 3e6e7ee23f854ee19c7167c2789acb3491f21e8e20173aa89a1f601019dc2fa7
font_01_sfnt_off00007356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7356 13620 bytes
SHA-256: 045c1ba9f82f6ec83dccba1a54b01359ba0168060d2f533d3074eba8e71e5686
font_02_sfnt_off00009eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB1 16204 bytes
SHA-256: 3c260b720ba846d87de456033c05b94d326aa9f09b16dabc19f167f97f6ae321
font_03_sfnt_off0000b3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3E1 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230