Malicious PDF — malware analysis report

Static analysis result for SHA-256 018f123e7faa510d…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 00:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93563f91eddd2f2280f2570fa6aa6a6e SHA-1: 89fb528245973ea16b6d43aa42983727c6a00ef9 SHA-256: 018f123e7faa510dadb038c4cb7fa34690533f2889c67cb7baca30d66de1d14a
154 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a malicious URL, disguised as a free template for Avery labels. This heuristic firing, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users to potentially harmful content. The document also hosts a large number of external PDF links, suggesting a link farm or SEO poisoning attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=avery+labels+18160+free+template
    • http://files.thesensualist.org/uploads/1/3/0/8/130814254/wuwotuw_fatitope_bogasokuriv.pdf
    • http://xuralo.38plus2productions.com/uploads/1/3/1/3/131398177/nejuwisugobad.pdf
    • http://files.valleyhikers.com/uploads/1/3/1/3/131379398/ketox.pdf
    • http://files.creativationevents.com/uploads/1/3/1/3/131380493/6612511.pdf
    • http://files.westseattlecoworking.com/uploads/1/3/1/3/131379049/tezazulixe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/renironipuwoguxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/good_night_image_shayari.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/63529777040.pdf
    • https://cdn.shopify.com/s/files/1/0437/2663/5157/files/zaxiteperujunebisip.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/formica_countertop_edges.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/vanoxew.pdf
    • https://cdn.shopify.com/s/files/1/0431/2150/8506/files/44908951576.pdf
    • https://cdn.shopify.com/s/files/1/0431/1891/9837/files/anglo_saksonlarn_stnlnn_sebepleri_nelerdir.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053cb.bin
e1c48fc951e41651b70c9238c8bbc1d861a8f886e52650ee76c3cb15302e03fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x53CB 5404 bytes
font_01_sfnt_off00006631.bin
992d2da9fb2a98c02cac8e33800025db565a91c32ec61446da8d85391f0e58dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 9992 bytes
font_02_sfnt_off00008877.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8877 4324 bytes