Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf82c33987af090…

MALICIOUS

PDF

47.7 KB Created: 2020-08-22 02:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc1951ce509e556485bd5215a1e6b4ec SHA-1: dc32c0a1bc5ba3e6beb59ff3ab680b3cc07c9c3e SHA-256: 9bf82c33987af090169b3a628c719b61e2d7b88a68b2a2876354e0b43adbfc5b
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=compass+direction+apk'. This redirector is likely used to deliver a second-stage payload. The document body, though heavily obfuscated, contains references to this malicious URL and other benign-looking PDF files hosted on Shopify, suggesting a link farm used for SEO poisoning or to obscure the true malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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=compass+direction+apk In PDF document text
    • http://files.stanleyshumkwanhon.com/uploads/1/3/0/7/130739308/4191074.pdfIn PDF document text
    • http://files.linetweaker.com/uploads/1/3/1/0/131070688/9422473.pdfIn PDF document text
    • http://dotekal.ccsdetroit.org/uploads/1/3/1/4/131437069/rukateliloxo.pdfIn PDF document text
    • http://setadawa.thecraftbeersocial.com/uploads/1/3/1/4/131453133/muvadoketimo_botorudinasuge_sorisexuf.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/1/0434/1540/4695/files/goanimate_comedy_world_creator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/tikojabugolobigexuwopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/7048503210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1326/6846/files/40181060264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4776/4647/files/android_os_for_sony_tv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/71092750700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7614/7607/files/www_alc_co_cjp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/konag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4274/1143/files/79981593912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/fesosotolisigixuzamut.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_off00005e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 5156 bytes
SHA-256: ab5fd44deeba692e706e966bb41836edfc5dadb5e30562ef72160b542959d9a5
font_01_sfnt_off00006fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 2092 bytes
SHA-256: 78e94e2e47178245ca437e301e19f50dc99845ecc02da2ba30fe2b1e34051cc2
font_02_sfnt_off0000794d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794D 10152 bytes
SHA-256: 2858c94f40c6b07196a6a13c2bb5746eccf383a45d1aee6e71ba2c7e9adb8130
font_03_sfnt_off00009c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3E 16224 bytes
SHA-256: 52510e4d70f3557fee5b5bbf0d3e68e4933a76b26214029a49039486d04c3985