Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c1973267b74d5a…

MALICIOUS

PDF

45.7 KB Created: 2020-10-29 02:29:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11d2c0394f452f2cbbcc6670ede5b78e SHA-1: 23331ae1409523b59d89cb67c4c5a3da01024dc4 SHA-256: c7c1973267b74d5a25185e94f6f069b157d918ed6acbc676b49e073744c87d02
154 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, including one identified as a malicious redirector. The primary malicious link, https://gettraff.ru/aws?keyword=ed+sheeran+don%2527t+touch+me+lyrics, is presented within the document body disguised as lyrics, likely to trick users into clicking it. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic, further indicating malicious intent.

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://gettraff.ru/aws?keyword=ed+sheeran+don%2527t+touch+me+lyrics
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/kasodopizafazakoxuk.pdf
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/1705095.pdf
    • https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/2107567.pdf
    • https://bodadesoka.weebly.com/uploads/1/3/4/2/134234706/metita.pdf
    • https://latijazaw.weebly.com/uploads/1/3/4/3/134312978/cf3190d6.pdf
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/subunolumevasez.pdf
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/mupedopudo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/robumuduluwise/beetlejuice_the_musical_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/5376/8090/files/lidiberakenivirixowezakad.pdf
    • https://uploads.strikinglycdn.com/files/a71d9e8f-dce8-4e30-91cd-a67b098540fd/larry_the_cabel_guy_jokes.pdf
    • https://uploads.strikinglycdn.com/files/9268550b-7e16-4be7-83ab-9a3656a30e3f/27365321314.pdf
    • https://uploads.strikinglycdn.com/files/3f5d9fe4-c72d-4131-af60-dec9f21ddcc1/525552905.pdf
    • https://uploads.strikinglycdn.com/files/cc218f6a-29b6-4053-b894-329e2238c475/55194837209.pdf
    • https://s3.amazonaws.com/lanorolowu/kixezanosugodafugilexijis.pdf
    • https://uploads.strikinglycdn.com/files/2ead0c44-cd5d-44dd-a3b7-3d72f0024237/nakog.pdf
    • https://cdn.shopify.com/s/files/1/0505/3218/8357/files/gidemetamebik.pdf
    • https://s3.amazonaws.com/dumupa/34061898811.pdf
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/38924822314.pdf
    • https://cdn.shopify.com/s/files/1/0484/8392/6171/files/tidakeju.pdf
    • https://cdn.shopify.com/s/files/1/0437/6317/1485/files/download_icon_pack_android_marshmallow.pdf
    • https://s3.amazonaws.com/jidosatikim/basic_english_sentences_for_daily_use.pdf
    • https://cdn.shopify.com/s/files/1/0501/4123/3317/files/points_lines_and_planes_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0266/9818/6937/files/lost_and_found_danielle_steel_review.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007418.bin
7facedbe4ca979806b2b045d6d8064dd2e6cfe1b4ff2d368543d0496a68bc31e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7418 5272 bytes
font_01_sfnt_off000085ea.bin
fba23f305ccc3376a5bce21fb417cf5714eb86596d630d55641275db45e3f6da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85EA 10368 bytes

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