Malicious PDF — malware analysis report

Static analysis result for SHA-256 36aa2ceca573e093…

MALICIOUS

PDF

40.7 KB Created: 2020-08-16 23:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 498a490857a129942204f01c2fe17b9a SHA-1: 278d4048798f340c340a174bf509f1d2db0a2213 SHA-256: 36aa2ceca573e09352bb02fed6ac9a816810d30b08c75b8a49bf0af7606295a1
234 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=best+weather+app+android+south+africa'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The primary intent appears to be directing users to malicious infrastructure under the guise of a search result.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=best+weather+app+android+south+africa In PDF document text
    • http://teduzuwew.new-york-reiki.com/uploads/1/3/0/8/130813528/a2d3723.pdfIn PDF document text
    • http://files.forestheightsacademyofexcellence.org/uploads/1/3/1/4/131453989/23a3342ad.pdfIn PDF document text
    • http://wugobotij.calicoband.com/uploads/1/3/1/8/131871787/bf365f762f36.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/1/0433/0042/1790/files/mubegaporowafawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6587/5359/files/35576346574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5407/5799/files/imagenomic_portraiture_cs6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/nafilexegewofumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9626/4094/files/systme_digestif_anatomie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5611/1520/files/xizopimabuluget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/tesinifomunozad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/totewogafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/braden_risk_assessment_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/nevor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/tetris_gba_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/33913213392.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6155 5352 bytes
SHA-256: a84c55fb59bb018baeb8430bda05d48dafe0689865da5e10b71cc7a85fcc8c7d
font_01_sfnt_off00007394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7394 9944 bytes
SHA-256: 97407a6d9253b60329cf5abce4d4bc9f381d17f9bf5469e78e14997137a704b6